日粮酪氨酸水平对5～8周龄泰和乌骨鸡生产性能及组织黑色素含量的影响  

Effects of Dietary Tyrosine Levels on Performance and Melanin Contents in Tissues of Taihe Silky Fowls Aged from 5 to 8 Weeks of Age

作　　者：赵艳平[1] 黎观红[1] 瞿明仁[1] 李建喜 

机构地区：[1]江西农业大学动物科技学院,江西南昌330045 [2]江西省家畜血吸虫防治站,江西南昌330046

出　　处：《江西农业大学学报》2009年第6期1083-1086,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金(30660129);科技部农业科技成果转化资金(2007GB2C500169);江西省主要学科学术与技术带头人培养计划项目(2008DD00800);江西省自然科学基金(2007GZN0702);江西省科技厅农业科技攻关重点项目(20061B0201500);江西省教育厅项目(GJJ08181)共同资助

摘　　要：研究日粮酪氨酸水平对泰和乌骨鸡生产性能和组织黑色素含量的影响。选用28日龄泰和乌骨鸡随机分成6组，每组设3个重复，每个重复15只鸡，饲养至8周龄。试验鸡组分别饲喂6种酪氨酸水平的日粮，日粮酪氨酸水平分别为0．48％、0．68％0．88％、1．08％、1．28％和1．48％。结果表明：日粮酪氨酸水平显著影响5～8周龄泰和乌骨鸡平均日增重、日采食量和料重比（P〈0．05），且在0．88％水平时显著影响平均日增重、料重比（P〈0．01）。日粮酪氨酸水平极显著影响5～8周龄泰和乌骨鸡组织中黑色素的含量（P〈0．01），随着日粮酪氨酸添加水平的提高组织中黑色素含量先增加后降低。心脏、肌肉、皮肤中黑色素的含量在1．08％水平时达到最高且与0．48％水平组差异极显著（P〈0．01）；而肝脏组织中黑色素的含量在1．28％水平达到最高。This study was conducted to investigate the effects of dietary tyrosine levels on performance and melanin contents in tissues of Taihe silky fowls aged from 5 to 8 weeks of age. Twenty - eight - day - old Taihe silky fowls were randomly allotted to 6 groups with 3 replicates of 15 birds each and were raised to 8 weeks of age. The birds were fed diets with tyrosine levels of 0.48% ,0.68% 0.88% , 1.08% , 1.28% and 1.48% , respectively. The results showed as follows： The average daily weight gain （ADG）, average daily feed intake （ADFI） and feed to gain ratio （F/G） of Taihe silky fowls were markedly influenced by the dietary tyrosine levels at 5 - 8 weeks of age （ P 〈 0.05 ） and the average daily weight gain （ADG） and feed to gain ratio （ F/ G） of Taihe silky fowls were significantly influenced by the dietary tyrosine 0.88% level （ P 〈 0.01 ）. The melanin contents in tissues increased first and decreased afterwards with the increase of dietary tyrosine levels,the melanin contents in heart,muscle and skin were significandy higher（ P 〈0. 01 ）at the 1.08% level compared with at the 0. 48% level,but the melanin contents in liver was very high at the 1.28% level.

关 键 词：泰和乌骨鸡 酪氨酸 生产性能 黑色素 

分 类 号：S831.5[农业科学—畜牧学]